21 Aug
2018
21 Aug
'18
11:50 p.m.
I unearthed some old TU58 tapes that luckily was readable (after carefully
replacing the tension band)
It resulted in two RT11 V4 images with two versions of the formatter
program. One is bootable and the other not.
http://storage.datormuseum.se/u/96935524/Datormusuem/Dilog/DQ604/sq604c.dsk
http://storage.datormuseum.se/u/96935524/Datormusuem/Dilog/DQ604/sq604d.dsk
I tried to run the formatter program in Simh:
.run sq604C.sav
TEST AND FORMAT DQ604 DISK SYSTEM (REV C.)
DRIVE FORMATS AS RL01 UNIT (5.24 MB)
SWITCH 3 CLOSED ENABLES BOOTSTRAP
THERE ARE 17 PHYSICAL SECTORS PER TRACK
(2) ALTERNATE CYLINDERS MAY BE ASSIGNED PER UNIT
THE INTERLACE FACTORS ARE TWO OR THREE TO ONE
DATA BUFFER ERROR
USE PROCEED (P) TO REPEAT TEST
HALT instruction, PC: 006312 (BR 6202)
.RUN SQ604D
TEST AND FORMAT DQ604 DISK SYSTEM (REV C.)
DRIVE FORMATS AS RL02 UNIT (10.48 MB)
SWITCH 3 CLOSED ENABLES BOOTSTRAP
THERE ARE 17 PHYSICAL SECTORS PER TRACK
(4) ALTERNATE CYLINDERS MAY BE ASSIGNED PER UNIT
THE INTERLACE FACTORS ARE TWO OR THREE TO ONE
DATA BUFFER ERROR
USE PROCEED (P) TO REPEAT TEST
HALT instruction, PC: 006312 (BR 6202)
So it appears to be runnable.
I also found the manual for the board and scanned it:
http://storage.datormuseum.se/u/96935524/Datormusuem/Dilog/DQ604/DQ604.pdf
Now the next step is to see if this can make the DQ604 board I have working
with David Gessweins MFM emulator.
26 Aug
26 Aug
12:27 a.m.
Which length band did you find worked best as a replacement?
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Mattis Lind via
cctalk
Sent: Wednesday, August 22, 2018 2:50 AM
To: General Discussion: On-Topic and Off-Topic Posts; Al Kossow
Subject: Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.
I unearthed some old TU58 tapes that luckily was readable (after carefully
replacing the tension band)
-----
28 Aug
28 Aug
2:25 a.m.
Den s?n 26 aug. 2018 kl 09:26 skrev Paul Birkel via cctalk <
cctalk at classiccmp.org>:
Which length band did you find worked best as a
replacement?
I used the white three inch plastiband. Rik Bos told me that the best way
is to heat the old band slightly. I used a SMD desoldering air gun which I
set to 100 degrees centigrade and then blowed heat air onto the tape from
some distance until it changed from a white matte surface into a darker
brown surface.
Then it easily came of the tape without damaging the tape. There were some
kind of residue left which I used isopropyl alcohol to remove. I also added
some lubricant to the tape rollers. This far I have recovered ten tapes
successfully. Two tapes only read 128 blocks.
I used RT11 to recover the tapes but it seems that the /IGNORE option
doesn't skip bad blocks at all. I had the hope that COPY/DEV/FILE/IGMORE
DD0: TU58.DSK would skip the bad blocks. But I might be misunderstanding
the syntax?
I will try to use DUP directly and see if that makes any difference.
Something like
* TU58.DSK/F=DD0:/I/J
But according to the manual it just skip the bad block which is annoying
since then all remaining blocks is shifted block number wise. Probably have
to manually recreate the structure using dd?
/Mattis
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Mattis
Lind via cctalk
Sent: Wednesday, August 22, 2018 2:50 AM
To: General Discussion: On-Topic and Off-Topic Posts; Al Kossow
Subject: Dilog DQ604 RL01 / RL02 emulation on ST506/ST412 disk.
I unearthed some old TU58 tapes that luckily was readable (after carefully
replacing the tension band)
-----
10:50 a.m.
On Tuesday (08/28/2018 at 11:25AM +0200), Mattis Lind via cctalk wrote:
Den s?n 26 aug. 2018 kl 09:26 skrev Paul Birkel via
cctalk <
cctalk at classiccmp.org>:
Hmm. 3" plastiband seem to be rare or my Google-foo is pretty bad.
Do you have a source for these?
I have found only 2-1/8", 4-1/4" and 6" so far.
Tack.
--
Chris Elmquist
Which length band did you find worked best as a
replacement?
I used the white three inch plastiband. Rik Bos told me that the best way
is to heat the old band slightly. I used a SMD desoldering air gun which I
set to 100 degrees centigrade and then blowed heat air onto the tape from
some distance until it changed from a white matte surface into a darker
brown surface.
11:22 a.m.
Den tis 28 aug. 2018 kl 19:50 skrev Chris Elmquist <chrise at pobox.com>:
On Tuesday (08/28/2018 at 11:25AM +0200), Mattis Lind
via cctalk wrote:
The SF-7000 contain a number of different sizes. 1 1/2 inch, 2 1/8 inch, 3
5/8, 4 1/4 inch and 6 inch
http://www.officedirectsupply.com/sf7000_baumgartens_plastiband_77071_prd1.…
On the other hand I haven't found a source for the 6 inch variant (that
actually could deliver them) other than in the mixed package.
/Mattis
Den s?n 26 aug. 2018 kl 09:26 skrev Paul Birkel
via cctalk <
cctalk at classiccmp.org>:
I
Which length band did you find worked best as a
replacement?
I used the white three inch plastiband. Rik Bos told me that the best way
is to heat the old band slightly. I used a SMD desoldering air gun which set to 100 degrees centigrade and then blowed
heat air onto the tape from
some distance until it changed from a white matte surface into a darker
brown surface.
Hmm. 3" plastiband seem to be rare or my Google-foo is pretty bad.
Do you have a source for these?
I have found only 2-1/8", 4-1/4" and 6" so far.
Tack.
--
Chris Elmquist
4:27 p.m.
On Tuesday (08/28/2018 at 08:22PM +0200), Mattis Lind wrote:
Den tis 28 aug. 2018 kl 19:50 skrev Chris Elmquist
<chrise at pobox.com>:
Got it. Thanks. So, 3-5/8" is actual. I was being too picky about your
3" statement :-)
It seems to be well known that the number of each size you get in the
SF-7000 package is, umm, random... so a guy needs to get several packages
and hope for plenty of white ones.
Thanks again,
Chris
--
Chris Elmquist
On Tuesday (08/28/2018 at 11:25AM +0200), Mattis
Lind via cctalk wrote:
The SF-7000 contain a number of different sizes. 1 1/2 inch, 2 1/8 inch, 3
5/8, 4 1/4 inch and 6 inch
http://www.officedirectsupply.com/sf7000_baumgartens_plastiband_77071_prd1.…
On the other hand I haven't found a source for the 6 inch variant (that
actually could deliver them) other than in the mixed package. Den s?n 26 aug. 2018 kl 09:26 skrev Paul Birkel
via cctalk <
cctalk at classiccmp.org>:
I
Which length band did you find worked best as a
replacement?
I used the white three inch plastiband. Rik Bos told me that the best way
is to heat the old band slightly. I used a SMD desoldering air gun which set to 100 degrees centigrade and then blowed
heat air onto the tape from
some distance until it changed from a white matte surface into a darker
brown surface.
Hmm. 3" plastiband seem to be rare or my Google-foo is pretty bad.
Do you have a source for these?
I have found only 2-1/8", 4-1/4" and 6" so far.
5 Sep
5 Sep
5:12 a.m.
It seems to be well known that the number of each size you get in the
SF-7000 package is, umm, random... so a guy needs to get several packages
and hope for plenty of white ones.
The box is marked "Made in Japan" so I started to check for other sources.
Then I found "Nisshinbo Mobilon Band". They look very much like the
plastibands.
https://www.nisshinbo-textile.co.jp/english/goodidea/mobilon_band.html
https://uk.misumi-ec.com/vona2/detail/223000860382/
Haven't ordered any yet.
Thanks again,
Chris
--
Chris Elmquist
/Mattis
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days inactive
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